4 minutes tohair like new
A leave-in treatment mask that works on the molecular level to reverse hair damage in just 4 minutes. The K18PEPTIDE™ is clinically proven to repair damage from bleach + color, chemical services and heat* – with immediate and lasting results to restore strength, softness, smoothness and bounce to hair.
CLINICALLY PROVEN BENEFITS
🏆 2022 Allure Best of Beauty Award Winner
- Patented K18PEPTIDE™
Reverses damage from bleach, color, chemical services + heat at the molecular level. - Works in 4 minutes
Fast-acting repair. Just wait 4 minutes before styling. - Highly concentrated formula
A little goes a long way. Start with 1 pump and build as needed. - Easy leave-in, no rinse needed
Skip the conditioner. Apply to damp hair and let the peptide do the work. - For all hair types
Universal repair for fine, thick, curly, or straight hair. - Vegan + cruelty-free
Clean, conscious hair science you can feel good about.
CLINICALLY PROVEN BENEFITS
🏆 Color-Safe Daily Protection Formula
- Patented K18PEPTIDE™
Helps reduce protein loss to keep hair strong, healthy, and resilient. - pH-optimized formula
Minimizes cuticle swelling during washing to prevent frizz, dullness, and damage. - Gentle, effective cleansing
Removes buildup while maintaining hair health without stripping moisture. - Microbiome-friendly
Supports a balanced, healthy scalp with every wash. - Color-safe + shine-enhancing
Helps preserve color, boost shine, and keep hair looking vibrant. - For all hair types
Ideal for fine, thick, curly, or straight hair—especially color-treated or damaged hair.
real people, real results
see more #k18results
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"I absolutely love this product!! You have to see it to believe it!"- Christina Marie P.
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"Amazing the way it feels and the shineprovides to the hair instantly."- Sandra M.
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"I've been using this mask for aboutfour washes so far. I feel that my hair isgetting healthier."- Olga S.
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"I really like it, I was able to tint my hairagain and it looks a little more thicker."- Estefania M.
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"I use this alllll the time. It's truly savedmy hair....And it's so gorgeous andshiny and the thickness is returningnicely."- Emma L.
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"My hair has been a mess for years...My new hair stylist recommended K18!... My hair looks and feels amazing withlasting results!!" - Arnell M
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
feel what's possible with hair like new, powered by biotech
Why Biotech?
Standard hair care relies on heavy oils and silicones for a temporary "smooth" feel. We use Biotech-Driven Innovation to mimic the natural structure of healthy hair. The result? Hair that doesn't just look better—it is better.
- Molecular Repair: Reverses damage from bleach, color, chemical services, and heat.
- Like-New Strength: Restores elasticity, bounce, and shine from the very first use.
- Weightless Brilliance: High-performance results without the heavy buildup.
"Feel what's possible with hair like new, powered by biotech."
Shop NowGet started here.
Got Questions?
What makes K18 different from other haircare brands?
What makes K18 different from other haircare brands?
K18 uses a patented peptide technology that works at the molecular level to repair hair damage—not just coat it like traditional products.
Can I use the shampoo every day?
Can I use the shampoo every day?
Yes. The Damage Shield Shampoo is pH-optimized and gentle enough for daily use, helping cleanse without stripping moisture or damaging the scalp barrier.
Do I need conditioner after using the shampoo?
Do I need conditioner after using the shampoo?
You can, but when using the K18 Hair Mask, it’s recommended to skip conditioner so the peptide can fully penetrate and repair the hair.
How do I use the K18 Hair Mask correctly?
How do I use the K18 Hair Mask correctly?
After shampooing, towel-dry your hair, apply 1–3 pumps, and wait 4 minutes before styling. Do not rinse out.
How often should I use the hair mask?
How often should I use the hair mask?
Use it for the first 4–6 washes in a row, then switch to maintenance mode (every 3–4 washes) depending on your hair condition.